21379974

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 72

約数和(自身を含む): 54765144

約数和(自身を除く): 33385170

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 77, 98, 121, 147, 154, 231, 242, 294, 363, 462, 539, 601, 726, 847, 1078, 1202, 1617, 1694, 1803, 2541, 3234, 3606, 4207, 5082, 5929, 6611, 8414, 11858, 12621, 13222, 17787, 19833, 25242, 29449, 35574, 39666, 46277, 58898, 72721, 88347, 92554, 138831, 145442, 176694, 218163, 277662, 323939, 436326, 509047, 647878, 971817, 1018094, 1527141, 1943634, 3054282, 3563329, 7126658, 10689987, 21379974]

約数ペア:

[(1, 21379974), (2, 10689987), (3, 7126658), (6, 3563329), (7, 3054282), (11, 1943634), (14, 1527141), (21, 1018094), (22, 971817), (33, 647878), (42, 509047), (49, 436326), (66, 323939), (77, 277662), (98, 218163), (121, 176694), (147, 145442), (154, 138831), (231, 92554), (242, 88347), (294, 72721), (363, 58898), (462, 46277), (539, 39666), (601, 35574), (726, 29449), (847, 25242), (1078, 19833), (1202, 17787), (1617, 13222), (1694, 12621), (1803, 11858), (2541, 8414), (3234, 6611), (3606, 5929), (4207, 5082)]